190 results on '"Pires, Fabio Ramoa"'
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152. PP - CLINICAL AND RADIOLOGICAL EVALUATION OF PATIENTS AFFECTED BY FLORID OSSEOUS DYSPLASIA: A MULTICENTER RETROSPECTIVE STUDY
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PEREIRA, DÉBORA LIMA, PIRES, FÁBIO RAMÔA, LOPES, MÁRCIO AJUDARTE, VAN HEERDEN, WILLIE, WRIGHT, JOHN MARSHALL, CARLOS, ROMÁN, and VARGAS, PABLO AGUSTIN
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- 2017
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153. PP - LANGERHANS CELL HISTIOCYTOSIS WITH ORAL MANIFESTATIONS IN TWO PEDIATRIC PATIENTS
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DE OLIVEIRA FILGUEIRAS, ANDREZA MARIA, PESSÔA, THIAGO MOREIRA, DE OLIVEIRA SILVA, GERALDO, JUNIOR, RAMOS, RUTH TRAMONTANI, CANTISANO, MARILIA HEFFER, ALMEIDA, OSLEI PAES, and PIRES, FÁBIO RAMOA
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- 2017
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154. HYPERPLASIA
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MIRANDA, AGUIDA MARIA MENEZES AGUIAR, PIRES, FÁBIO RAMÔA, NETTO, JULIANA DE NORONHA SANTOS, and AMARAL, SIMONE MACEDO
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- 2017
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155. OP - SOLITARY FIBROUS TUMOR IN THE FLOOR OF THE MOUTH IN A PATIENT PREVIOUSLY AFFECTED BY A PLEOMORPHIC ADENOMA
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PEREIRA, DÉBORA LIMA, MIRANDA, ÁGUIDA MARIA MENEZES AGUIAR, LOVISI, CAIO, DA SILVEIRA, HENRIQUE MARTINS, and PIRES, FÁBIO RAMÔA
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- 2017
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156. Oral squamous cell carcinoma: clinicopathological features from 346 cases from a single Oral Pathology service during an 8-year period
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Pires, Fabio Ramoa, primary, Ramos, Amanda Barreto, additional, Oliveira, Jade Bittencourt Coutinho de, additional, Tavares, Amanda Serra, additional, Luz, Priscilla Silva Ribeiro da, additional, and Santos, Teresa Cristina Ribeiro Bartholomeu dos, additional
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- 2013
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157. Fine-needle aspiration biopsy as an auxiliary diagnostic tool on intraoral minor salivary gland adenoid cystic carcinoma
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Netto, Juliana de Noronha Santos, Miranda, Águida Maria Menezes Aguiar, da Silveira, Henrique Martins, dos Santos, Teresa Cristina Ribeiro Bartholomeu, and Pires, Fábio Ramôa
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- 2008
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158. Oral myofibromas: report of two cases and review of clinical and histopathologic differential diagnosis
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de Souza Azevedo, Rebeca, Pires, Fábio Ramôa, Coletta, Ricardo Della, de Almeida, Oslei Paes, Kowalski, Luiz Paulo, and Lopes, Márcio Ajudarte
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- 2008
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159. Differences on clinicopathological profile from intraoral minor salivary gland tumors around the world
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Pires, Fábio Ramôa, de Almeida, Oslei Paes, Pringle, Gordon, and Chen, Sow-Yeh
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- 2008
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160. Comparación de la inmunoexpresión de ICAM-1, TGF-β1 y ki-67 en quistes periapicales y residuales.
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Martins, Rafaela, Armada, Luciana, dos Santos, Teresa-Cristina, and Pires, Fabio-Ramoa
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Copyright of Medicina Oral, Patologia Oral y Cirugia Bucal is the property of Medicina Oral SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2017
161. Contact Stomatitis to Toothpaste: Importance of Differential Diagnosis
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DE MACEDO AMARAL, SIMONE, MIRANDA, ÁGUIDA MARIA MENEZES AGUIAR, NETTO, JULIANA DE NORONHA SANTOS, and PIRES, FÁBIO RAMOA
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- 2015
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162. Oral Traumatic Neuroma in a Child
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RAMOS, RUTH TRAMONTANI, PESSOA, THIAGO MOREIRA, TEIXEIRA SOUZA, T, CANTISANO, MARÍLIA HEFFER, PICCIANI, BRUNA LAVINAS SAYED, PIRES, FÁBIO RAMOA, and SILVA JÚNIOR, GERALDO OLIVEIRA
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- 2015
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163. Sinonasal Non-Intestinal-Type Adenocarcinoma: A Case Report
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DE ANDRADE, MARCO AURELIO CARVALHO, DE AZEVEDO, ALEXANDRO BARBOSA, DA CUNHA MACEDO, JEANNE, PIRES, FÁBIO RAMOA, and LOPES, MÁRCIO AJUDARTE
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- 2015
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164. Metastasis of a Ductal Prostate Adenocarcinoma to the Mandible
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RANGEL, TUANNY LIMA, ALENCAR, FELIPE SOUZA LIMA, RAMOS, RUTH TRAMONTANI, PIRES, FÁBIO RAMOA, PESSÔA, THIAGO MOREIRA, SILVA JÚNIOR, GERALDO OLIVEIRA, and CANTISANO, MARÍLIA HEFFER
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- 2015
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165. Dentigerous Cyst Associated With Supernumerary Tooth: Case Report
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DE SOUZA, THAYS TEIXEIRA, GALVÃO, JARDEL, BARBOSA RAMOS, MARIA ELIZA, PIRES, FÁBIO RAMOA, DE MENEZES MACIEL, ROSEMIRO, ISRAEL, MÔNICA SIMÕES, and ANTERO, SARAH APARECIDA
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- 2015
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166. Central Giant Cell Lesion Initially Treated With Dexamethasone: Case Report
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DE ALMEIDA FREIRE, NATHÁLIA, SCALERCIO, MICHELLE, CHAGAS, WAGNER, DE MENEZES MACIEL, ROSEMIRO, ISRAEL, MONICA SIMÕES, PIRES, FÁBIO RAMOA, and ANTERO, SARAH APARECIDA
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- 2015
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167. Paracoccidioidomycosis in a Female Patient: Case Report
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DA SILVA SCALERCIO, MICHELLE, DICK, THAYLLA NÚÑEZ AMIN, NUNES, CYNTHIA, CORTEZ, KAREN, PIRES, FÁBIO RAMOA, ISRAEL, MÔNICA SIMÕES, and DE MENEZES MACIEL, ROSEMIRO
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- 2015
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168. Adenomatoid Odontogenic Tumor, Extrafollicular Type: A Case Report
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CANTISANO, MARÍLIA HEFFER, ALENCAR, FELIPE SOUZA LIMA, RANGEL, TUANNY LIMA, PESSOA, THIAGO MOREIRA, SILVA JÚNIOR, GERALDO OLIVEIRA, PIRES, FÁBIO RAMOA, and RAMOS, RUTH TRAMONTANI
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- 2015
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169. Multiple Myeloma: Primary Oral Presentation of 3 Aggressive Cases
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Miranda, Águida Maria Menezes Aguiar, Amaral, Simone Macedo, Pires, Fábio Ramoa, de Noronha Santos Netto, Juliana, Queiroz, Cynthia Costa, and de Moraes Pereira, Jaqueline
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- 2015
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170. Verruciform Xanthoma of the Gingiva: Case Report
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Rodrigues, Janderson Teixeira, Miranda, Águida Maria Menezes Aguiar, Amaral, Simone Macedo, de Noronha Santos Netto, Juliana, and Pires, Fábio Ramoa
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- 2015
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171. Retrospective Clinicopathological Analysis of 172 Cases of Minor Oral Salivary Gland Tumors in a Brazilian Population
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ABRAHAO, ALINE CORREA, DE NORONHA SANTOS NETTO, JULIANA, PIRES, FÁBIO RAMÔA, and CABRAL, MÁRCIA GRILLO
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- 2014
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172. Clinicopathological Profile of Seventy Ameloblastomas Diagnosed in a Single Oral Pathology Service
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FILIZZOLA, ANDRESSA INCERTE, PIRES, FÁBIO RAMÔA, and DOS SANTOS, TERESA CRISTINA RIBEIRO BARTHOLOMEU
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- 2014
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173. Glandular Odontogenic Cyst: Case Report
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RODRIGUES, JANDERSON TEIXEIRA, PIRES, FÁBIO RAMÔA, DE SOUSA CASTRO, JOÃO MASSÁ, MIRANDA, ÁGUIDA MARIA MENEZES AGUIAR, and DA COSTA ABAD, ERNANI
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- 2014
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174. Granular Cell Tumor: Case Report
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DE SOUZA, THAYS TEIXEIRA, PIMENTEL, THAÍS, CAPELLA, RAPHAELA, ALMEIDA, NATHÁLIA, PIRES, FÁBIO RAMOA, DE MENEZES MACIEL, ROSEMIRO, and ISRAEL, MÔNICA
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- 2014
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175. Adenoid Cystic Carcinoma on The Upper Lip Mimicking a Benign Neoplasia
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NIGRI, ANNA PAULA, SILVA, ALINE ARAÚJO, PIRES, FÁBIO RAMOA, ANTERO, SARAH APARECIDA, DE MENEZES MACIEL, ROSEMIRO, RAMOS, MARIA ELIZA BARBOSA, and ISRAEL, MÔNICA
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- 2014
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176. Actinomycosis in an Area of Previous Extractions: Case Report
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DE ALMEIDA FREIRE, NATHALIA, RANGEL, TUANNY LIMA, PIMENTEL, THAÍS, DE MENEZES MACIEL, ROSEMIRO, ANTERO, SARAH APARECIDA, PIRES, FÁBIO RAMOA, and ISRAEL, MÔNICA
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- 2014
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177. Osteosarcomas: Clinicopathological Characteristics of Five Cases With Emphasis on Diagnostic Features
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MENEZES AGUIAR MIRANDA, ÁGUIDA MARIA, PIRES, FÁBIO RAMÔA, DE NORONHA SANTOS NETTO, JULIANA, and AMARAL, SIMONE MACEDO
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- 2014
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178. Aging as a Risk Factor on the Immunoexpression of Pro-Inflammatory IL-1β, IL-6 and TNF-α Cytokines in Chronic Apical Periodontitis Lesions.
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Teixeira, Quésia Euclides, Ferreira, Dennis de Carvalho, da Silva, Alexandre Marques Paes, Gonçalves, Lucio Souza, Pires, Fabio Ramoa, Carrouel, Florence, Bourgeois, Denis, Sufiawati, Irna, and Armada, Luciana
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PERIAPICAL periodontitis ,INTERLEUKIN-6 ,OLDER people ,OLDER patients ,CYTOKINES ,AGING ,EOSINOPHILIC granuloma - Abstract
Simple Summary: Apical periodontitis often manifests as a chronic and asymptomatic disease. The formation of chronic apical periodontitis lesion (CAPL) occurs due an imbalance between microorganisms in a root canal system and a host's immune response. The pro-inflammatory characteristic of periapical granulomas has been established; increased IL-1β, IL-6 and TNF-α has been documented. In humans over 65 years of age, the immune system becomes more fragile, including a persistent inflammatory response, making them more susceptible to reactivation of latent viruses, bacterial and viral pathogens, autoimmune diseases, opportunistic infections and neoplasms. The question of this study is as follows: in aging adults, do chronic apical periodontitis lesions as biomarkers have a risk effect on the immunoexpression of pro-inflammatory cytokines (IL-1β, IL-6 and TNF-α) compared to adults? The results demonstrated that the pro-inflammatory cytokines IL-1β, IL-6 and TNFα showed higher expression in the CAPL of the elderly than in the adult control group, thus suggesting that aging could be considered a modifier of periradicular disease. However, although aging is not the main cause for the development of CAPL, it seems to be able to influence its evolution. However, further elaborate research studies/analyses to elucidate the reasons and consequences of inflammation in the elderly are recommended. Persistent inflammatory responses in the elderly may act as modifiers on the progression and repair of chronic apical periodontitis lesions (CAPLs). While the involvement of IL-1β, IL-6 and TNF-α in inflammatory responses and, particularly, in CAPL has been documented, their expression in elderly patients needs to be further characterized. Therefore, the purpose of this study was to evaluate and compare the expressions of pro-inflammatory cytokines in CAPL from elderly individuals with young/middle-aged individuals. Thirty CAPL (15 cysts and 15 granulomas) from elderly patients (>60 years) and 30 CAPL (15 cysts and 15 granuloma) from young/middle-aged individuals (20–56 years) were selected. Immunohistochemical reactions were performed against IL-1β, IL-6 and TNF-α. The slides were subdivided into five high-magnification fields and analyzed. The number of positive stains was evaluated for each antibody. There was no significant difference between the cytokines when the cysts and granuloma were compared in the two groups. In the young/middle-aged, only IL-1β showed a difference and was significantly higher in granulomas (p = 0.019). CAPL pro-inflammatory cytokine levels in the elderly were significantly higher than in young/middle-aged individuals (p < 0.05). The pro-inflammatory cytokines IL-1β, IL-6 and TNF-α were significantly higher in CAPL in the elderly compared with the young/middle-aged group. Further elaborate research studies/analyses to elucidate the reasons for and consequences of inflammation in the elderly are recommended. [ABSTRACT FROM AUTHOR]
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- 2022
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179. COLABORADORES
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Vieira, Adalberto Ramos, Diogenes, Anibal R., Filho, Arlindo dos Santos Costa, Sigurdsson, Asgeir, Murgel, Carlos Alberto Ferreira, Elias, Carlos Nelson, Durack, Conor, Ricucci, Domenico, Moreira, Edson Jorge Lima, Andrade, Eduardo Dias de, Nunes, Eduardo, Pires, Fábio Ramoa, Alves, Flávio Rodrigues Ferreira, Silveira, Frank Ferreira, Debelian, Gilberto, Leoni, Graziela Bianchi, Rotstein, Ilan, Inojosa, Inês de Fátima A.J., Rôças, Isabela das Neves, Soares, Janir Alves, Pécora, Jesus Djalma, Provenzano, José Claudio, Camargo, José Maurício Paradella de, Ranali, José, Hargreaves, Kenneth M., Souza, Letícia Chaves, Armada, Luciana, Júnior, Manoel Brito, Neto, Manoel Damião de Sousa, Batista, Marcelo Mangelli Decnop, Cabreira, Marcelo Sendra, Vieira, Márcia Valéria Boussada, Versiani, Marco Aurélio, Freire, Marcus Vinícius, Volpato, Maria Cristina, Trope, Martin, Neves, Mônica Aparecida Schultz, Saberi, Navid, Patel, Shanon, Vieira, Victor Talarico, Chiesa, Wanderson Miguel Maia, Filho, Wantuil Rodrigues Araujo, and Lopes, Weber Schmidt Pereira
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- 2015
180. Erratum to “Cytokeratin expression in initial oral mucositis of head and neck irradiated patients”: [Oral Surg Oral Med Oral Pathol Oral Radiol Endod 101 (2006) 205–211]
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Bonan, Paulo Rogério Ferreti, Kaminagakura, Estela, Pires, Fábio Ramoa, Vargas, Pablo Agustin, and Paes de Almeida, Oslei
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- 2006
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181. Mucous Extravasation Phenomenon Following Vermilionectomy.
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Pereira, Claudio Marahnao, Bonan, Paulo Rogerio Ferreti, Pires, Fabio Ramoa, and de Almeida, Oslei Paes
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- 2002
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182. Low level laser therapy to prevent oral mucositis in patients with acute lymphoblastic leucemia: pilot study
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Alves, Marcela Pessanha Ferraz, Fischer, Ricardo Guimarães, Antunes, Héliton Spíndola, Figueredo, Carlos Marcelo da Silva, Pires, Fabio Ramoa, and Ribeiro, Magali Silveira Monteiro
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Oral mucositis ,Mucosite oral ,Chemotherapy ,Leucemia linfoblástica aguda ,Quimioterapia ,Acute lymphoblastic leukemia ,CIENCIAS DA SAUDE::ODONTOLOGIA::PERIODONTIA [CNPQ] ,Lasertherapy ,Laserterapia - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T15:06:35Z No. of bitstreams: 1 DISSERTACAO_FINAL_MARCELA_PESSANHA_FERRAZ_ALVES word.pdf: 1915810 bytes, checksum: 482a3b62215791b3e404c1baae161ff7 (MD5) Made available in DSpace on 2021-01-07T15:06:35Z (GMT). No. of bitstreams: 1 DISSERTACAO_FINAL_MARCELA_PESSANHA_FERRAZ_ALVES word.pdf: 1915810 bytes, checksum: 482a3b62215791b3e404c1baae161ff7 (MD5) Previous issue date: 2016-02-26 Oral mucositis (OM) is one of the most common and painful complication induced by radiotherapy and / or chemotherapy and may induce serious complications in the patient's condition. The use of low-power laser therapy for the treatment and prevention of OM has shown excellent clinical results, to be well tolerated and presents no discomfort toxicity and side effects. However, further studies are necessary to improve the use of the laser and to get the best biomodulation of tissue reactions. The aim of this study was to evaluate the incidence of OM grade 2, 3 and 4 in patients with acute lymphoblastic leukemia (ALL) who received prophylactic laser. This is a pilot prospective, randomized, double-blind, clinical trial. We evaluated 21 patients diagnosed with ALL undergoing chemotherapy from March to November 2015. Patients were randomized prior to the start of the study to receive either low level laser treatment with a wavelength of 660nm or 808nm both with 100 mW, 4 J / cm2, 1J and a "spot size" of 0.24 cm2. Patients were evaluated during hospitalization, daily from D 0 to D +5 and later in the outpatient control. Statistical analyzes were calculated using the patients and chemotherapy blocks as unit of analysis. The results showed that both groups presented low incidence of OM, no patient developed oral mucositis grade 4 on the WHO scale, no patient had to use opioids to control OM pain and there were no reported cases of interruption or delay chemotherapy treatment due to severe mucositis. In addition, the maximum time for the resolution of mucositis was four days and there were no cases of readmission with primary reason OM. The laser application was well tolerated by all patients and there was no side effect derived from its use. Group 1 showed higher incidence of oral mucositis not significantly different and with longer duration of lesions in the analysis by patients, as compared to group 2. These results suggest that care in the prevention of OM with two laser sources associated with the oral hygiene was effective. Moreover, the prophylaxis to prevent mucositis associated with immediate care, the first symptom of patients, can be critical to the rapid resolution of the lesions. A mucosite oral é uma das complicações mais comuns e dolorosas induzidas por radioterapia e/ou quimioterapia e pode gerar sérias complicações no quadro clínico do paciente. A utilização da terapia com laser de baixa potência para o tratamento e prevenção da mucosite oral (MO) tem apresentado excelentes resultados clínicos, por ser bem tolerada, e não apresentar desconforto, toxicidade e efeitos colaterais. No entanto, são necessárias mais pesquisas para melhorar a utilização do laser e assim, obter a melhor biomodulação de reações teciduais. O objetivo geral dessa pesquisa foi avaliar a incidência de MO nos pacientes com LLA que receberam laser profilático. Trata-se de um estudo piloto tipo ensaio clínico controlado, aleatorizado, duplo cego e prospectivo. Foram avaliados 21 pacientes com diagnóstico de Leucemia Linfoblástica Aguda (LLA) submetidos à quimioterapia no período de março até novembro de 2015. Os pacientes foram aleatorizados previamente ao início do estudo entre receber tratamento com laser de baixa potência com comprimento de onda de 660nm ou 808nm ambos com 100 mW, 4J/cm2, 1J e um spot size de 0,24 cm2. Os pacientes foram avaliados durante o período de internação, diariamente, do D 0 ao D +5 e posteriormente no controle ambulatorial. As análises estatísticas foram realizadas por pacientes e por blocos de quimioterapia e foi possível notar que em ambos os grupos a incidência de MO foi baixa, nenhum paciente desenvolveu mucosite oral grau 4 na escala da OMS, nenhum paciente precisou usar opioide para controlar a dor de MO e não foram registrados casos de interrupção ou atraso do tratamento quimioterápico devido à mucosite grave. Além disso, o tempo máximo para a resolução da mucosite foi de quatro dias e não ocorreram casos de reinternação com motivo primário de MO. A aplicação do laser foi bem tolerada por todos os pacientes e não houve qualquer efeito colateral derivado de seu uso. O grupo 1, que recebeu a profilaxia com laser vermelho, apresentou maior incidência de Mucosite oral sem diferença significante e com maior tempo de duração das lesões na análise por pacientes em relação ao grupo 2, que recebeu a profilaxia com o laser infravermelho. Esses resultados sugerem que o cuidado na prevenção da MO com as duas fontes de laser, associados com a higiene oral foi eficaz. E que a profilaxia para a prevenção da mucosite associada ao cuidado imediato, ao primeiro sintoma dos pacientes, pode ser fundamental para a rápida resolução das lesões.
- Published
- 2016
183. Comportamento dos enxertos alógenos em bloco na reconstrução alveolar maxilar antes e após a instalação de implantes: análise tomográfica, histológica e imunohistoquímica da incorporação e remodelação
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Martins, Daniel Deluiz, Tinoco, Eduardo Muniz Barretto, Schiller, Paul Christian, Ribeiro, Danilo Passeado Branco, Pires, Fabio Ramoa, Fischer, Ricardo Guimarães, Oliveira, Luciano Santos, and Riederer, Ingo
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Enxerto ósseo ,Fresh-frozen bone ,Allogeneic transplantation ,Osso homólogo ultracongelado ,Bone graft ,Aumento do rebordo alveolar ,Transplante alogênico ,Homologous transplantation ,Alveolar ridge augmentation ,Transplante homólogo ,CIENCIAS DA SAUDE::ODONTOLOGIA::PERIODONTIA [CNPQ] - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T14:58:04Z No. of bitstreams: 1 ARQUIVO FINAL_DANIEL DELUIZ MARTINS.pdf: 865420 bytes, checksum: da513ff26adf63fb8c7c38f58c6310e9 (MD5) Made available in DSpace on 2021-01-07T14:58:04Z (GMT). No. of bitstreams: 1 ARQUIVO FINAL_DANIEL DELUIZ MARTINS.pdf: 865420 bytes, checksum: da513ff26adf63fb8c7c38f58c6310e9 (MD5) Previous issue date: 2016-02-04 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Extremely resorbed alveolar ridges may lead to insufficient bone volume for dental implants placement, as well as jeopardize the final prosthesis in the aesthetic and functional standpoints. In the last decade, several studies have demonstrated the application of allogeneic grafts as bone substitutes in the alveolar reconstruction. Although case reports and case series are well documented in the literature, the use of the allograft bone requires more well-designed studies to guide the clinical practice. The aim of this study was to evaluate the clinical behavior of bone allograft blocks before and after implant placement and to investigate its incorporation and remodeling. In a 53-months period, patients who had indication for maxillary bone block reconstruction were consecutively included in the study. The trial was divided into four studies to investigate the following parameters separately: the incorporation and remodeling; the prevalence of complications and the survival rate of the implants; histological and tomographic long-termdata; and a pilotstudy. The grafts showed resorption rates from 13.98% (4 months) to 31.52% (6 months); new bone formation from 20.79% (4 months) to 27.2% (6 months); presence of bone cells and absence of inflammatory infiltratehistologically; intense positivity for a physiological bone activitymarker; 22.14% prevalence of complications; and a implants survival rate of 94.03%. After a 4 years follow-up with loaded implants, the grafts demonstrated a reabsorption rate from 2.1 to 7.7%. Histologically, remnants of allograft tissue were found along with an abundant number of osteocytes, osteoblasts and vessels. The evaluated parameters showed to be similar to other reconstructive procedures, demonstrating the viability of allogeneic bone block grafts as an option to augment thealveolar ridgefor dental implants placement Rebordos alveolares extensamente reabsorvidos podem levar a um volume ósseo insuficiente para a instalação de implantes osseointegrados, assim como comprometer as restaurações definitivas no ponto de vista estético e funcional.Na última década, diversos estudos têm demonstrado a aplicação de enxertos alógenos como substitutos ósseos nareconstruçãoalveolar.Apesar de bem documentado em relatos e séries de casos, o uso do tecido alógeno ainda requer estudos mais bem desenhados para a orientação da prática clínica e das condutas na sua utilização. O objetivo do presente estudo foi avaliar o comportamento clínico dos aloenxertos ósseos em bloco antes e após a instalação dos implantes, além de investigar sua incorporação e remodelação. Em um período de 53 meses, pacientes que tivessem indicação para reconstrução maxilar óssea em bloco foram consecutivamente incluídos no estudo. O trabalho foi dividido em 4 estudos para a investigação dos parâmetros separadamente: a incorporação e remodelação; a prevalência de complicações e taxade sobrevivência dos implantes;dados histológicos e tomográficos de longo prazo; além de um ensaio piloto.Os enxertos apresentaram taxas de reabsorção entre 13,98% (4 meses) e 31,52% (6 meses); neoformação óssea entre 20,79% (4 meses) e 27,2% (6 meses);presença de células ósseas e ausência de infiltrado inflamatório histologicamente; intensa positividade para um marcador de atividade óssea fisiológica; prevalência de complicações de 22,14%; além demonstrar uma taxa de sobrevivência dos implantes instalados de 94,03%. Após 4 anos de acompanhamento com implantes em carga, demonstram uma reabsorção entre 2,1 a 7,7%. Histologicamente, foram encontrados remanescentes do tecido alógeno juntamente com um número abundante de osteócitos, osteoblastos e vasos.Os parâmetros avaliados apresentam-se similares aos de outras modalidades reconstrutivas, demonstrando a viabilidade dos enxertos em bloco alógenos como uma opção para o aumento ósseo maxilar com fins de instalação de implantes dentais.
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- 2016
184. Use of minimally invasive gingival biopsies in the study of inflammatory mediators expression and their correlation with gingival fluid in patients with severe periodontitis
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Lomba, Karina Schittine Bezerra, Figueredo, Carlos Marcelo da Silva, Pires, Fabio Ramoa, Fischer, Ricardo Guimarães, Rocha, Luiz Eduardo Monteiro Dias da, Antunes, Susyane Almeida de Souza, Souza, Alessandra Areas e, and Silva, Fernanda de Brito
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Gengiva - Imunologia ,Gingiva - Pathology ,Líquido do sulco gengival ,Periodontia ,Periodontics ,Gengiva - Patologia ,Mediadores da inflamação ,Inflammation mediators ,Gingival crevicular fluid ,Periodontite ,Periodontitis ,CIENCIAS DA SAUDE::ODONTOLOGIA::PERIODONTIA [CNPQ] ,Gingiva - Immunology - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T14:57:14Z No. of bitstreams: 1 TESE_FINAL_KARINA_SCHITTINE_BEZERRA_LOMBA.pdf: 1647712 bytes, checksum: 68a0d3dfd802f740488b82c5ecc06822 (MD5) Made available in DSpace on 2021-01-07T14:57:14Z (GMT). No. of bitstreams: 1 TESE_FINAL_KARINA_SCHITTINE_BEZERRA_LOMBA.pdf: 1647712 bytes, checksum: 68a0d3dfd802f740488b82c5ecc06822 (MD5) Previous issue date: 2014-09-26 The aim of this study was to use minimally invasive biopsies to evaluate the expression of inflammatory mediators and their correlation with gingival fluid in patients with severe periodontitis. The test group comprised 22 patients with severe periodontitis (mean age 45.5 ± 8.9 years SD), analyzed by shallow and deep sites and the control group for 14 periodontally healthy patients (mean age 39.35 ± SD 16.5 years). Gingival fluid samples were collected with absorbent paper in the same sites where biopsies were performed, and quantified by Luminex® to IFN-γ, IL-1 β, IL-6, IL-21, IL-22, IL-23, IL-25, IL-31, IL-33, IL-4, IL-6, IL-10, IL-17A, IL-17F, TNF and sCD40L. Biopsies were taken with a 2 mm diameter punch in both groups. Immunohistochemistry was semiquantitative evaluated, comprising epithelial cells, plasma cells, macrophages, fibroblasts and endothelial cells, to IL1-β, IFN-γ, IL-6 and IL-17. Immunohistochemical markers were observed in the analyzed cells groups, both in periodontitis patients as in controls, without significant differences between them. The gingival fluid showed higher amounts for IL-1β and IL-23 in deep sites. No significant correlations between immunohistochemical markers and GCF were found. In the comparative analysis between immunohistochemical markers and GCF, IL1-β showed high concordance in shallow and deep sites. In conclusion, the use of a standardized punch 2mm diameter for periodontal tissue biopsies proved to be feasible for studies with immunohistochemistry. The gingival fluid may not express all the markers of the corresponding tissue, with variations depending on the analysed marker and local inflammatory conditions. O objetivo deste estudo foi utilizar biópsias minimamente invasivas para avaliar a expressão de mediadores inflamatórios e sua correlação com o fluido gengival em pacientes com periodontite severa. O grupo teste compreendeu 22 pacientes com periodontite severa (idade média 45,5 ± DP 8,9 anos), analisados por sítios rasos e profundos, e o grupo controle por 14 pacientes periodontalmente saudáveis (idade média 39,35 ± DP 16,5 anos). As amostras do fluido gengival foram coletadas com papel absorvente, nos mesmos sítios de onde foram realizadas as biópsias, e quantificadas, por Luminex®, para IFN- γ, IL 1-β, IL-6, IL-21, IL-22, IL-23, IL-25, IL-31, IL-33, IL-4, IL-6, IL-10, IL-17A, IL-17F, sCD40L e TNFα. Foram coletadas biópsias, com um punch de 2mm de diâmetro nos grupos teste e controle. A avaliação imuno-histoquímica foi semiquantitativa, nas células epiteliais, plasmócitos, macrófagos, fibroblastos e células endoteliais, para a IL1-β, IFN-γ, IL-6 e IL-17. Foram observadas marcações imuno-histoquímicas, em todos os grupos celulares analisados, tanto nos pacientes com periodontite como nos controles, sem diferenças significativas entre eles. O fluido gengival apresentou maiores quantidades para os marcadores IL-1β e IL-23 nos sítios profundos. Não foram encontradas correlações significativas entre as marcações imuno-histoquímicas e o fluido gengival para os subgrupos analisados. Na análise comparativa entre as biópsias e o fluido gengival, a IL1-β mostrou alta concordância nos sítios rasos e profundos. Concluindo, a utilização padronizada de um punch de 2mm de diâmetro para biópsias em tecido periodontal mostrou- se viável, para estudos com imuno-histoquímica. O fluido gengival pode não expressar todos os marcadores do tecido correspondente, com variações dependendo do marcador analisado e das condições inflamatórias locais.
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- 2014
185. Expression of interferon-γ in gingival biopsies from patients with severe chronic periodontitis
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Beiler, Tatiane Flôr Coelho de Souza Breves, Figueredo, Carlos Marcelo da Silva, Pires, Fabio Ramoa, Fischer, Ricardo Guimarães, Ribeiro, Magali Silveira Monteiro, and Miceli, Vívian de Carvalho
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Gingival biopsies ,Biópsias gengivais ,CIENCIAS DA SAUDE::ODONTOLOGIA [CNPQ] ,Chronic periodontitis ,Imuno-histoquímica ,Interferon-γ ,Gingival crevicular fluid ,Fluido gengival ,Immunohistochemistry ,Periodontite crônica - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T15:05:29Z No. of bitstreams: 1 DISSERTACAO_FINAL_TATIANE_FLOR_COELHO_DE_SOUZA_BREVES_BEILER.pdf: 1997705 bytes, checksum: dd492659878dc47e9761e1cd3fb52d8a (MD5) Made available in DSpace on 2021-01-07T15:05:29Z (GMT). No. of bitstreams: 1 DISSERTACAO_FINAL_TATIANE_FLOR_COELHO_DE_SOUZA_BREVES_BEILER.pdf: 1997705 bytes, checksum: dd492659878dc47e9761e1cd3fb52d8a (MD5) Previous issue date: 2014-02-03 The aim of this study was to analyze the expression of interferon-gamma (INF-γ) in gingival biopsies from shallow and deep sites in patients with severe chronic periodontitis. The secondary objective was to correlate the expression of INF-γ in the gingival crevicular fluid (GCF) with sites where the gingival biopsies were collected. Biopsies from 22 patients with chronic generalized or localized severe periodontitis (mean age 45.5 ± SD 8.9 years), 22 deep and 18 shallow sites were collected. The control group consisted of 14 patients clinically healthy (mean age 39.35 ± SD 16.5 years). In total, 54 biopsies were collected from 36 patients. The GCF samples were collected from some of the same sites where biopsies were performed, totaling 12 deep sites, 8 shallow sites and 4 control sites. Clinical evaluation parameters including probing pocket depth (PPD), clinical attachment level (CAL), visible plaque index (VPI) and gingival bleeding index (GBI) were used. The tissue was removed with a 2 mm of diameter punch, in the surgery area (control group) or in the subgingival scaling with or without surgical access (test group) and stored in an Eppendorff with 1 ml of 10% formaldehyde for subsequent morphological and immunohistochemical analysis. The intensity of staining was evaluated semi - quantitatively in the epithelial cells, plasma cells, macrophages, fibroblasts and endothelial cells, considering strong staining (score 2), weak staining (score 1) or absence of staining (score 0). The Kruskal-Wallis test was used to compare the expression of INF-γ in epithelial and connective tissues between the three groups (shallow and deep sites of periodontitis and control sites). We observed a trend for a similar pattern of staining in the shallow and deep sites, with a predominance of weak staining in deep sites. In control sites the staining of the epithelium was predominant. However, we could not demonstrate statistically significant differences between the expression of INF-γ in epithelial and connective tissues in the groups that were analyzed. The Spearman correlation analysis showed a strong correlation between the immunohistochemical expression of INF-γ in the epithelium with macrophages, fibroblasts and endothelial cells (r ≥ 0.6 and p ≤ 0.01). There was no correlation with the expression of INF-γ in the epithelial and connective tissues with the clinical data and with the GCF. We conclude that there were no differences in the expression of INF-γ in gingival biopsies in shallow and deep sites of pacients with periodontitis compared to healthy subjects, which may be attributed to the biphasic character of INF-γ. The low detection of INF-γ in the GCF, within the limitations of the study, may suggest that the GCF may not be the election method for detection of INF-γ. O objetivo desse estudo foi analisar a expressão do interferon-gamma (INF-γ) em biópsias gengivais de sítios rasos e profundos de pacientes com periodontite crônica severa. O objetivo secundário foi correlacionar a expressão do INF-γ no fluido gengival com os sítios onde foram coletadas as biópsias gengivais. Foram coletadas biópsias de 22 pacientes portadores de periodontite crônica generalizada ou localizada severas (idade média 45,5 DP 8,9 anos), sendo 22 sítios profundos e 18 sítios rasos. O grupo controle foi composto por 14 pacientes clinicamente saudáveis (idade média 39,35 DP 16,5 anos). No total, foram 54 biópsias coletadas de 36 pacientes. As amostras do fluido gengival foram coletadas de alguns dos mesmos sítios de onde foram realizadas as biópsias, totalizando 12 sítios profundos, 8 sítios rasos e 4 sítios controle. Foram utilizados os parâmetros clínicos de avaliação de profundidade de bolsa à sondagem (PB); nível de inserção clínica (NIC); índice de placa visível (IPV) e índice de sangramento gengival (ISG). O tecido foi removido com punch de 2 mm de diâmetro, na área cirúrgica (grupo controle) ou na consulta para raspagem subgengival com ou sem acesso cirúrgico (grupo teste) e armazenados em Eppendorffs com 1 ml de solução de formaldeído a 10% para posterior análise morfológica e imuno-histoquímica. A intensidade da marcação do INF-γ foi avaliada semiquantitativamente nas células epiteliais, plasmócitos, macrófagos, fibroblastos e células endoteliais, considerando-se marcação forte (escore 2), marcação fraca (escore 1) ou ausência de marcação (escore 0). O teste de Kruskal-Wallis foi utilizado para comparar a expressão do INF-γ nos tecidos epitelial e conjuntivo, entre os três grupos (sítios profundos e rasos da periodontite e sítios controle). Observamos uma tendência a um padrão de marcação similar nos sítios rasos e profundos, com predomínio de marcação fraca nos sítios profundos. Nos sítios controle a marcação do epitélio demonstrou ser predominante. Porém, não foi possível demonstrar diferenças estatisticamente significativas entre a expressão do INF-γ nos tecidos epitelial e conjuntivo nos grupos analisados. A análise da correlação de Spearman revelou uma forte correlação entre a expressão imuno-histoquímica do INF-γ no epitélio com macrófagos, fibroblastos e células endoteliais (r ≥ 0,6 e p ≤ 0,01). A expressão do INF-γ nos tecidos demostrou não ter correlação significante com os dados clínicos apresentados e com o fluido gengival. Concluímos que não foi possível observar diferenças na expressão do INF-γ em biópsias gengivais nos sítios rasos e profundos de pacientes com periodontite quando comparados à indivíduos saudáveis, o que pode ser atribuído ao caráter bifásico do INF-γ. A baixa detecção do INF-γ no fluido gengival, dentro das limitações do estudo, pode sugerir que este talvez não seja o método de eleição para a detecção do INF-Y.
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- 2014
186. Incorporation and remodeling of bone homografts in the alveolar ridge reconstruction in humans: tomographic, histologic and histomorphometric analisys
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Martins, Daniel Deluiz, Tinoco, Eduardo Muniz Barretto, Ribeiro, Danilo Passeado Branco, Pires, Fabio Ramoa, and Oliveira, Luciano Santos
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Enxerto ósseo ,Fresh-frozen bone ,Allogeneic transplantation ,Osso homólogo ultracongelado ,Bone graft ,Aumento do rebordo alveolar ,Transplante alogênico ,Homologous transplantation ,Alveolar ridge augmentation ,Transplante homólogo ,CIENCIAS DA SAUDE::ODONTOLOGIA::PERIODONTIA [CNPQ] - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T15:06:03Z No. of bitstreams: 1 DISSERTACAO_DANIEL_DELUIZ_MARTINS.pdf: 698607 bytes, checksum: 8bf1bb6196a1bc25a1fd9c448b676890 (MD5) Made available in DSpace on 2021-01-07T15:06:03Z (GMT). No. of bitstreams: 1 DISSERTACAO_DANIEL_DELUIZ_MARTINS.pdf: 698607 bytes, checksum: 8bf1bb6196a1bc25a1fd9c448b676890 (MD5) Previous issue date: 2011-12-05 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Fresh-frozen homologous bone grafts have been reported achieving good clinical results as a substitute for autogenous bone in alveolar reconstruction. However, data regarding the incorporation and remodeling of these grafts are not available in the literature. The aim of this study is to determine the optimal period for the implant placement in alveolar ridges reconstructed with bone block allografts. 24 patients underwent alveolar ridge reconstruction with homologous bone prior to implant placement. Subjects were randomly assigned into one of three groups according to the waiting time for the second surgical stage (4, 6 and 8 months). Tomographic, histological and histomorphometric analisys were used to determine the rates of grafts resorption and incorporation at different time intervals for each group. Data from graft resorption showed statistically significant differences for the three healing intervals. Similarly, histomorphometric parameters as: osteocytes count and quantification of remaining graft in the biopsies showed significant differences between groups. According to this work, with regard to the remodeling and incorporation, the most favorable the short term period to implant placement after fresh-frozen block allografts ridge reconstruction is 4 months. Enxertos ósseos homólogos congelados têm sido documentados apresentando bons resultados clínicos como substituto ao material autógeno nas reconstruções alveolares. Entretanto, dados referentes à incorporação e remodelação destes enxertos não estão disponíveis na literatura. Este estudo tem por objetivo determinar um período ótimo de espera para instalação de implantes em rebordos reconstruídos com enxertos ósseos homólogos em bloco no que se refere à incorporação e reabsorção. 24 pacientes foram submetidos à reconstrução alveolar óssea homóloga previamente à instalação de implantes. Os indivíduos foram alocados randomicamente em um de 3 grupos de acordo com o tempo de espera para o segundo estágio cirúrgico (4, 6 e 8 meses). Análises tomográficas, histológicas e histomorfométricas foram utilizadas a fim de determinar o grau de reabsorção e incorporação dos enxertos nos diferentes intervalos de tempo para cada grupo. Os dados de reabsorção sofrida pelos enxertos demonstraram diferenças estatisticamente significativas para os três intervalos de espera. Da mesma forma, parâmetros histomorfométricos como contagem de osteócitos e quantificação de remanescentes de osso homólogo nas biópsias apresentaram diferenças significativas entre os grupos. De acordo com os dados do presente trabalho, no que diz respeito à remodelação e incorporação, o período mais favorável à instalação dos implantes a curto prazo após recontruções com enxertos homólogos é de 4 meses.
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- 2011
187. Periodontal therapy reduces blood pressure, left ventricle mass, endothelial dysfunction and plasma levels of C-reactive protein, interleukin 6 and fibrinogen in refractory hypertensive patients
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Marques, Fábio Vidal, Fischer, Ricardo Guimarães, Medeiros, Bruno Rescala Conde de, Figueredo, Carlos Marcelo da Silva, Pires, Fabio Ramoa, Valente, Maria Isabel Bastos, and Rosalem Junior, Wilson
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Arterial hypertension ,Massa ventricular esquerda ,Periodontal therapy ,Fibrinogen ,Interleukin 6 ,Proteína C-reativa ,Terapia periodontal ,CIENCIAS DA SAUDE::ODONTOLOGIA::PERIODONTIA [CNPQ] ,C-reactive protein ,Doença periodontal - Tratamento ,Left ventricle mass ,Fibrinogênio ,Endothelial dysfunction ,Hipertensão arterial ,Disfunção endotelial ,Sistema cardiovascular - Doenças ,Interleucina 6 ,Hipertensão - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T14:56:06Z No. of bitstreams: 1 TESE_FINAL_FABIO_VIDAL.pdf: 3875912 bytes, checksum: 0f9f5e639fd5d9bf8f6c664247c4e8b4 (MD5) Made available in DSpace on 2021-01-07T14:56:06Z (GMT). No. of bitstreams: 1 TESE_FINAL_FABIO_VIDAL.pdf: 3875912 bytes, checksum: 0f9f5e639fd5d9bf8f6c664247c4e8b4 (MD5) Previous issue date: 2011-01-14 Recent evidences suggest that periodontal diseases may play a relevant role in the etiology and pathogenesis of cardiovascular diseases and hypertension. The inflammatory response, and the consequent elevation of systemic markers such as C-reactive protein, fibrinogen and interleukin-6, and endothelial dysfunction, may be responsible for this association. Some studies have reported higher blood pressure levels, left ventricle mass and endothelial dysfunction in patients presenting periodontal diseases. At the same time, clinical trials have been showing that periodontal therapy can lead to the reduction of plasmatic levels of inflammatory markers and reduction of the cardiovascular risk. The present study aims to evaluate the effects of non-surgical periodontal therapy in 26 patients (mean age: 53.6±8.0 years old) diagnosed as having refractory hypertension. The study measured plasmatic markers of inflammation (C-reactive protein, fibrinogen and interleukin-6), systolic and diastolic blood pressure, left ventricle mass and arterial stiffness. Periodontal therapy was effective in reducing all cardiovascular risk markers evaluated. The levels of C-reactive protein lowered 0.7mg/dl 6 months after periodontal therapy, the IL-6 levels, 1.6pg/dl and fibrinogen levels 55.3mg/dl (p
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- 2011
188. Effect of non surgical periodontal treatment in chronic and aggressive subjects: microbiological and immunological findings
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Rosalem Junior, Wilson, Figueredo, Carlos Marcelo da Silva, Pires, Fabio Ramoa, Capelli Júnior, Jonas, Uzeda, Milton de, Fischer, Ricardo Guimarães, and Teles, Ricardo Palmier
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Aggressive periodontitis ,Subgingival microbiota ,Microbiota subgengival ,Chronic periodontitis ,Cytokines ,Gingival crevicular fluid ,Citocinas ,Fluido do sulco gengival - Microbiologia ,Fluido gengival ,CIENCIAS DA SAUDE::ODONTOLOGIA::PERIODONTIA [CNPQ] ,Periodontite crônica ,Periodontite agressiva - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T14:55:51Z No. of bitstreams: 1 Tese_Wilson_Rosalem_Junior_FINAL.pdf: 1130030 bytes, checksum: 015204c4fb96cd1d0d6c02f0d9ad40e8 (MD5) Made available in DSpace on 2021-01-07T14:55:51Z (GMT). No. of bitstreams: 1 Tese_Wilson_Rosalem_Junior_FINAL.pdf: 1130030 bytes, checksum: 015204c4fb96cd1d0d6c02f0d9ad40e8 (MD5) Previous issue date: 2010-03-29 Our aim was to compare the expression of IL1β, IL-4, IL-8, INF-γ, elastase activity and the composition of the subgingival microbiota profile before and after non-surgical periodontal treatment in patients with untreated generalized chronic (GCP) and aggressive periodontitis (GAgP). Twenty patients with GCP and 14 with GAgP were evaluated. Clinical data, GCF and plaque were analyzed at baseline and 3 months after non-surgical periodontal treatment. IL-1β, IL-4, IL-8 and INFγ were analyzed in a luminex assay. Elastase activity was assessed by an enzymatic assay. Subgingival plaque samples were analyzed using checkerboard DNA-DNA hybridization. Three months after periodontal therapy significant improvement for all clinical parameters in both groups were found. We have found significant reductions in the elastase activity in shallow and deep sites from GAgP and in deep sites from GCP group. A significant increase in INF-γ in the shallow sites from GAgP group were also found. Microbiological data showed significant reductions in the levels of members of the red complex (P. gingivalis, T. forsythia, T. denticola), and for the species E.nodatum and P.micra on GCP group. In the GAgP group, there were significant reductions in levels of P. gingivalis, T. forsythia, Fusobacterium nucleatum and Fusobacterium polymorphum ss periodonticum. When the clinical and immunological responses after therapy were compared between groups, only slight differences were found. No microbiological difference was found between groups after therapy. In conclusion, the findings support our hypothesis that the chronic and aggressive periodontitis respond equally well to non-surgical periodontal treatment. O objetivo do presente estudo foi comparar a expressão de IL-1β, IL-4, IL-8, interferon-γ, atividade de elastase e a composição do perfil microbiano subgengival antes e depois do tratamento periodontal não cirúrgico em pacientes com doença peridontal crônica generalizada (PC) e agressiva generalizada (PA). Vinte pacientes com PC e quatorze com PA foram avaliados. Dados clínicos, fluido gengival e biofilme subgengival foram analisados na visita inicial (VI) e 3 meses (3M) após o tratamento periodontal não cirúrgico. Amostras de fluido gengival (FG) foram coletadas com tiras de papel e os níveis de: IL-1β, IL-4, IL-8 e INF-γ foram medidos, utilizando um tipo de imunoensaio multiplexado (Luminex). Atividade da elastase foi avaliada por um ensaio enzimático. Amostras de placa subgengival foram analisadas através do checkerboard DNA-DNA hybridization. Na avaliação de 3 meses após terapia periodontal foi encontrado melhora significativa para todos os parâmetros clínicos em ambos os grupos. Foram encontradas reduções significativas na atividade de elastase nos sítios rasos e profundos dos pacientes do grupo PA e nos sítios profundos do grupo PC, também foi achado um aumento significativo de INF-γ nos sítios rasos do grupo PA. Os dados microbiológicos, mostraram reduções significativas para os níveis dos membros do complexo vermelho (P. gingivalis, T. forsythia, T.denticola), e para as espécies E.nodatum e P.micra no grupo PC. No grupo PA, ocorreram reduções significativas no níveis de P. gingivalis, T. forsythia, Fusobacterium nucleatum ss polymorphum e Fusobacterium periodonticum. Quando as respostas clínica e imunológica 3M após terapia foram comparadas entre os grupos, apenas diferenças sutis foram observadas. Nenhuma diferença microbiológica foi encontrada entre os grupos após a terapia. Em conclusão, os achados suportam nossa hipótese de que as periodontites cronica e agressiva respondem de forma semelhante ao tratamento periodontal nao cirúrgico.
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- 2010
189. Mechanical, physical and chemical parameters in mandible evaluation of sex steroid deficiency rats
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Dias, Luciana Armada, Saba, Celly Cristina Alves do Nascimento, Santos, Rachel Moreira Morais dos, Rosenthal, Doris, Moura, Egberto Gaspar de, Pires, Fabio Ramoa, and Pereira, Rosa Maria Rodrigues
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Deficiência de Esteróides Sexuais ,Bone loss ,Aging ,Perda Óssea ,Envelhecimento ,CIENCIAS BIOLOGICAS::FISIOLOGIA::FISIOLOGIA DE ORGAOS E SISTEMAS [CNPQ] ,Osteoporose em mandíbula ,Sex steroids deficiency ,Mandible osteoporosis - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-06T20:53:38Z No. of bitstreams: 1 Luciana Armada Dias.pdf: 2161456 bytes, checksum: aee5d0e4526599c2ed64924149f2eb61 (MD5) Made available in DSpace on 2021-01-06T20:53:38Z (GMT). No. of bitstreams: 1 Luciana Armada Dias.pdf: 2161456 bytes, checksum: aee5d0e4526599c2ed64924149f2eb61 (MD5) Previous issue date: 2009-02-19 The increase in the life expectancy has been raising the occurrence of common degenerative alterations in aging population, as osteoporosis. This systemic disease is also frequent in hypogonadism and affects the bone metabolism, included mandibular bone. The aim of this study was to evaluate how sex steroid deficiency, induced by orchiectomy (ORX) or ovariectomy (OVX), influences on mandible bone remodeling of rats, in groups of chronic experimental periods. Wistar rats, 3 mouths, had been divided in three groups: controls (C), castrated (ORX; OVX) and castrated with hormonal treatment (ORX+TP testosterone propionate, 0,4 mg/100g BW/day; OVX+EB - estradiol benzoate, 0.7 µg/100g BW/day). Females were previously evaluated by vaginal cytology and only rats with regular estrous cycle were used. The corporal mass was weekly verified and after experimental periods (90, 120 and 150 days), the animals were sacrificed. The blood was collected and serum stored for posterior analysis. Mandibles, femurs and columns were excised, measured and prepared to analyses of bone mineral density and physical and biomechanical properties. After castration, males presented low gain in body mass (90d: 12%, 120d: 24% and 150d: 13% lower than C, p< 0,05), in contrast of females (90d: 38% and 120d: 41% upper than C, p< 0,05). The measures of all bones were lower in males and in females (♂ - 90d: vertebrae 11.8%, femur 4.4%, mandibular condyle MD 9.4%, mandibular condyle VL 16.6%; 120d: vertebrae 13.6%, femur 4%, mandibular condyle MD 9%, mandibular condyle VL 22.2%; 150d: vertebrae 16.8%, femur 6% , mandibular condyle MD 21.6%, mandibular condyle VL 29.1% and ♀ - 90d: vertebrae 7.7%, femur 5.6%, mandibular condyle MD 29.1 %, mandibular condyle VL 11.8%; 120d: vertebrae 15.9 %, femur 6.1%, mandibular condyle MD 33.6%, mandibular condyle VL 14.8% and 150d: vertebrae 21.6%, femur 5.42%, mandibular condyle MD 29.1%, mandibular condyle VL 15.1% lower than C, p< 0,05), in all experimental periods. Males and females presented serum concentration of sex steroid hormones, phosphate and alkaline phosphatase lower than control group, p< 0,05 (Testosterone - 90d: 87%,120d: 87.5%,150d: 90.4%; Estradiol - 90d: 85.8%, 120d: 80.8%, 150d: 71.5%; Phosphate - ORX - 120d: 7.5%, 150d: 9.2% and OVX 90d: 17.2%, 120d: 16%, 150d: 24%; Alkaline phosphatase - ORX - 90d: 7%, 120d: 6.8%, 150d: 9.5% and OVX 90d: 21.2%, 120d: 26.1%, 150d: 43.3%). No significant differences were found in the males calcium concentration, but it was lower in castrated females (90d: 13.1%, 120d: 11.7%, 150d: 26.2%, p< 0,05).The bone mineral density and biomechanical properties of vertebrae and femur were reduced earlier in females than in males (♀ - vertebrae from 90d and femur from 120d; ♂ - vertebrae from 120d and femur from 150d, p< 0,05). However, mandibles were affected only in 150d males. There weren t significant alterations on the physical properties. In conclusion, gonadal function loss caused low bone mass, preferentially in trabecular bone, affected females earliest than males and its decreases more with aging. Mandibular bone is affected in chronic periods principally when associated with masticatory activities alterations. Bones alterations resulted from Hypogonadism were minimized, by estradiol benzoate or testosterone propionate treatment, in female and male, respectively. O aumento da expectativa de vida vem elevando a ocorrência das alterações degenerativas comuns à terceira idade, como a osteoporose. Essa doença sistêmica também freqüente no hipogonadismo, afeta o metabolismo ósseo comprometendo inclusive a mandíbula. O objetivo deste estudo foi avaliar de que forma a deficiência de esteróides sexuais, induzida por orquiectomia ou ovariectomia, influencia o processo de remodelação óssea da mandíbula de ratos por períodos experimentais crônicos. Ratos Wistar, com 3 meses, foram divididos em três grupos experimentais: controles (C), castrados (ORQ; OVX) e castrados com tratamento hormonal (ORQ + PT - propionato de testosterona, 0,4 mg/100g PC/dia; OVX + BE - benzoato de estradiol, 0,7 µg/100g PC/dia). As fêmeas foram previamente avaliadas por citologia vaginal e somente as que apresentaram o ciclo estral regular foram utilizadas. A massa corporal foi verificada semanalmente e ao final dos períodos experimentais (90, 120 e 150 dias) os animais foram sacrificados. O sangue foi coletado e o soro armazenado para posterior análise. As mandíbulas, fêmures e colunas foram excisados, medidos e preparados para análises da densidade mineral óssea e das propriedades físicas e biomecânicas. Observamos que com a castração, machos apresentaram baixo ganho de massa corporal (90d: 12%, 120d: 24% e 150d: 13% a menos que C, p< 0,05), ao contrário das fêmeas (90d: 38% e 120d: 41% a mais que C, p< 0,05). As medidas de todos os ossos foram menores tanto em machos como em fêmeas (♂ - 90d: vértebra 11.8%, fêmur 4.4%, côndilo MD 9.4%, côndilo VL 16.6%; 120d: vértebra 13.6%, fêmur 4%, côndilo mandibular MD 9%, côndilo mandibular VL 22.2%; 150d: vértebra 16.8%, fêmur 6% , côndilo mandibular MD 21.6%, côndilo mandibular VL 29.1% e ♀ - 90d: vértebra 7.7%, fêmur 5.6%, côndilo mandibular MD 29.1 %, côndilo mandibular VL 11.8%; 120d: vértebra 15.9 %, fêmur 6.1%, côndilo mandibular MD 33.6%, côndilo mandibular VL 14.8%; 150d: vértebra 21.6%, fêmur 5.42%, côndilo mandibular MD 29.1%, côndilo mandibular VL 15.1% a menos que C, p< 0,05), em todos os períodos experimentais. Em ambos os sexos as concentrações séricas de esteróides sexuais, fósforo e fosfatase alcalina foram menores em relação ao grupo controle, p
- Published
- 2009
190. Microscope analyze of direct dental pulp capping with differents materials in human teeth
- Author
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Penina, Patricia de Oliveira, Fidel, Sandra Rivera, Fidel, Rivail Antonio Sergio, Sassone, Luciana Moura, Pires, Fabio Ramoa, Roldi, Armelindo, and Castro, Antonio José Ribeiro de
- Subjects
Cimentos dentários ,Dental materials ,Dental cements ,Capeamento da polpa dentária ,Canal radicular ,Materiais dentários ,Dental pulp capping ,Materiais restauradores do canal radicular ,CIENCIAS DA SAUDE::ODONTOLOGIA::ENDODONTIA [CNPQ] ,Root canal filling materials - Abstract
Submitted by Boris Flegr (boris@uerj.br) on 2021-01-07T14:56:24Z No. of bitstreams: 1 Patricia de Oliveira Penina Moreira Cesar.pdf: 5318927 bytes, checksum: 263b98667867c3f6de5cc92b5bdd516c (MD5) Made available in DSpace on 2021-01-07T14:56:24Z (GMT). No. of bitstreams: 1 Patricia de Oliveira Penina Moreira Cesar.pdf: 5318927 bytes, checksum: 263b98667867c3f6de5cc92b5bdd516c (MD5) Previous issue date: 2007-11-06 The direct dental pulp capping aims to preserve the pulp vitality. This work shows the tissue response from human pulps to that procedure with the Mineral Trioxide Agregate (MTA) compared to calcium hydroxide - Ca(OH)2. Twenty premolars from 10 patients with extraction indicated to orthodontic treatment were used. All teeth showed pulp vitality and were treated with direct dental pulp capping with MTA or with calcium hydroxide. The teeth have been extracted within 14 or 45 days, stablishing the following experimental groups: Ca(OH)2 14 days; Ca(OH)2 45 days; MTA 14 days; and MTA 45 days. These teeth were analyzed under microscopy by two observers trained. The data obtained were put in table using the Kappa test to note the agreement degree between the observers. For the comparative assessment between the citotoxic response from material tested has been applied the non-paired Kruskal-Wallis test, and the Dunn s test for individual comparisons and identifying the significance of findings. In the analysis of results there had no statistically significant difference between the groups in experimental periods of 14 days and 45 days, not even in the pulp inflammatory response to calcium hydroxide when compared to MTA. The thickness and arrangement of the healing dentin barrier faced with calcium hydroxide, when compared to MTA, also showed no statistically significant difference. It may be concluded that the MTA fulfils the requirements of pulp capping material in human teeth showing biological and physical properties that indicate it for this treatment. O capeamento pulpar direto busca preservar a vitalidade pulpar. Este trabalho apresenta a resposta tecidual de polpas humanas ao capeamento pulpar direto com o Agregado de Trióxido Mineral (MTA) comparado com o hidróxido de cálcio. Foram utilizados 20 pré-molares de dez pacientes com extração indicada para tratamento ortodôntico. Todos os dentes apresentavam vitalidade pulpar e neles foram feitos capeamentos pulpares diretos com MTA ou com o hidróxido de cálcio. Os dentes foram extraídos num período de 14 dias ou 45 dias, estabelecendo os seguintes grupos experimentais: Ca(OH) 14 dias; Ca(OH) 45 dias; MTA 14 dias e MTA 45 dias. Estes dentes foram analisados microscopicamente por dois examinadores treinados. Os dados obtidos foram tabulados, utilizando-se o teste Kappa para observar o grau de concordância entre os examinadores. Para avaliação comparativa entre as respostas citotóxicas dos materiais testados foi aplicado o teste não paramétrico Kruskal-Wallis e o teste de Dunn para comparações individuais e identificação da significância dos achados. Na análise dos resultados não houve diferença estatisticamente significante entre os grupos nos períodos experimentais de 14 e 45 dias, e nem na resposta inflamatória pulpar frente ao hidróxido de cálcio quando comparado ao MTA. Quanto à espessura e à organização da barreira dentinária reparatória com o hidróxido de cálcio, quando comparado com o MTA também não apresenta diferença estatisticamente significante. Conclui-se que o MTA satisfaz os requisitos de um material capeador pulpar em dentes de humanos, apresentando propriedades físicas e biológicas que o indicam para este tratamento.
- Published
- 2007
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